Phys.org news tagged with:electronic statehttp://phys.org/
en-usPhys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.Single-molecule graphene switches bring minute electronic devices a step closerResearchers have discovered how to control molecules attached to graphene, paving the way for tiny biological sensors and devices to hold information.http://phys.org/news/2016-11-single-molecule-graphene-minute-electronic-devices.html
Nanomaterials Fri, 25 Nov 2016 10:28:26 ESTnews399292101Engineers develop process for electronic devices that stops wasteful power leakageAccording to the National Resource Defense Council, Americans waste up to $19 billion annually in electricity costs due to "vampire appliances," always-on digital devices in the home that suck power even when they are turned off.http://phys.org/news/2016-10-electronic-devices-power-leakage.html
Engineering Tue, 25 Oct 2016 10:35:26 ESTnews396610514Researchers road-test powerful method for studying singlet fissionIn a new study, researchers measure the spin properties of electronic states produced in singlet fission – a process which could have a central role in the future development of solar cells.http://phys.org/news/2016-10-road-test-powerful-method-singlet-fission.html
General Physics Tue, 18 Oct 2016 05:56:49 ESTnews395989003Researchers determine naphthalene concentrations in the airResearchers from the National Research Nuclear University MEPhI (Russia) have investigated possible structures of the naphthalene dimer in different states in order to better understand the photochemical properties of naphthalene and to estimate its concentrations in the air based on spectral measurements.http://phys.org/news/2016-10-naphthalene-air.html
Materials Science Tue, 04 Oct 2016 06:33:25 ESTnews394781596Samsung suffers backlash in China over smartphone responseLiu Jingtang was a Samsung loyalist. The Shanghai technology consultant traded up steadily through its smartphones to the new Note 7. But Liu's devotion was shaken by the Korean tech giant's confusing response to its latest product safety scare.http://phys.org/news/2016-09-samsung-backlash-china-smartphone-response.html
Consumer & Gadgets Wed, 21 Sep 2016 02:56:41 ESTnews393645365Scientists precisely measure the charge state of manganeseMost atoms lose or gain just a few negatively charged electrons from their surroundings, but not manganese. This element can donate up to seven electrons or wrench as many as three electrons away, abilities that can have implications for water and soil quality. Scientists need to accurately count the number of electrons manganese has when present in materials and minerals. Led by Pacific Northwest National Laboratory (PNNL), a team from the Smithsonian Institution and Penn State devised an easy-to-implement method that does just that. Their approach, based on detailed, controlled experiments and careful analysis, lets others with access to an x-ray photoelectron spectrometer conduct their own measurements.http://phys.org/news/2016-09-scientists-precisely-state-manganese.html
Materials Science Mon, 05 Sep 2016 06:13:11 ESTnews392274781'Artificial atom' created in grapheneIn a tiny quantum prison, electrons behave quite differently as compared to their counterparts in free space. They can only occupy discrete energy levels, much like the electrons in an atom - for this reason, such electron prisons are often called "artificial atoms". Artificial atoms may also feature properties beyond those of conventional ones, with the potential for many applications for example in quantum computing. Such additional properties have now been shown for artificial atoms in the carbon material graphene. The results have been published in the journal Nano Letters, the project was a collaboration of scientists from TU Wien (Vienna, Austria), RWTH Aachen (Germany) and the University of Manchester (GB).http://phys.org/news/2016-08-artificial-atom-graphene.html
Nanophysics Mon, 22 Aug 2016 10:00:32 ESTnews391078813Towards the T-1000: Liquid metals propel future electronicsScience fiction is inching closer to reality with the development of revolutionary self-propelling liquid metals—a critical step towards future elastic electronics.http://phys.org/news/2016-08-t-liquid-metals-propel-future.html
Materials Science Thu, 04 Aug 2016 05:50:31 ESTnews389508609Unconventional quasiparticles predicted in conventional crystalsAn international team of researchers has predicted the existence of several previously unknown types of quantum particles in materials. The particles—which belong to the class of particles known as fermions—can be distinguished by several intrinsic properties, such as their responses to applied magnetic and electric fields. In several cases, fermions in the interior of the material show their presence on the surface via the appearance of electron states called Fermi arcs, which link the different types of fermion states in the material's bulk.http://phys.org/news/2016-07-unconventional-quasiparticles-conventional-crystals.html
Condensed Matter Thu, 21 Jul 2016 14:00:06 ESTnews388320153Scientists develop a minimally traumatic and inexpensive ceramic laser scalpelScientists from MIPT and their colleagues have developed a compact and powerful ceramic-based laser with applications in minimally traumatic and inexpensive laser surgical scalpels, and also for cutting and engraving composite materials. The results of the study have been published in Optics Letters.http://phys.org/news/2016-07-scientists-minimally-traumatic-inexpensive-ceramic.html
Optics & Photonics Wed, 20 Jul 2016 07:42:49 ESTnews388219358All you need for quantum computing at room temperature is some mothballsMuch of the current research on the development of a quantum computer involves work at very low temperatures. The challenge to make them more practical for everyday use is to make them work at room temperature.http://phys.org/news/2016-07-quantum-room-temperature-mothballs.html
Quantum Physics Mon, 18 Jul 2016 08:09:16 ESTnews388048144Physicists observe behavior of quantum materials in curved spaceLight and matter are typically viewed as distinct entities that follow their own, unique rules. Matter has mass and typically exhibits interactions with other matter, while light is massless and does not interact with itself. Yet, wave-particle duality tells us that matter and light both act sometimes like particles, and sometimes like waves.http://phys.org/news/2016-06-physicists-behavior-quantum-materials-space.html
Quantum Physics Mon, 13 Jun 2016 06:13:31 ESTnews385017199Controlling quantum states atom by atomAn international consortium led by researchers at the University of Basel has developed a method to precisely alter the quantum mechanical states of electrons within an array of quantum boxes. The method can be used to investigate the interactions between various types of atoms and electrons, which is essential for future quantum technologies, as the group reports in the journal Small.http://phys.org/news/2016-06-quantum-states-atom.html
Quantum Physics Thu, 09 Jun 2016 10:31:18 ESTnews384687064Ferrous chemistry in aqueous solution unravelledAn HZB team has combined two different analytical methods at the BESSY II synchrotron source in order to extract more information about the chemistry of transition-metal compounds in solution. These kinds of compounds can act as catalysts to promote desirable reactions in energy materials, but their behavior has not been completely understood thus far.http://phys.org/news/2016-05-ferrous-chemistry-aqueous-solution-unravelled.html
Materials Science Wed, 11 May 2016 11:37:23 ESTnews382185431Ultrafast pulses shed light on photochemical processesTunnelling ionization studies by researchers in Japan and Russia show changes in electron distributions between ground- and excited-state in laser tunnelling ionization of molecules.http://phys.org/news/2016-05-ultrafast-pulses-photochemical.html
General Physics Tue, 10 May 2016 06:40:01 ESTnews382080372Researchers use light and sound waves to control electron statesUniversity of Oregon physicists have combined light and sound to control electron states in an atom-like system, providing a new tool in efforts to move toward quantum-computing systems.http://phys.org/news/2016-04-electron-states.html
Quantum Physics Thu, 07 Apr 2016 12:57:37 ESTnews379252648A key to development of materials for the foundation of quantum computersAn international research group observed a state in copper oxides in which orbital degrees of freedom did not freeze at low temperatures and electrons fluctuated due to quantum fluctuations. The group also clarified the time scale of these quantum fluctuations in multifrequency electron spin resonance (ESR) experiments in a strong magnetic field for the first time.http://phys.org/news/2016-04-key-materials-foundation-quantum.html
General Physics Quantum Physics Fri, 01 Apr 2016 07:03:03 ESTnews378712971Successful real-time observation of atomic motion with sub-nanometer resolutionResearchers have succeeded in using the immensely powerful X-ray pulses from the free electron laser (XFEL) facility SACLA to investigate excited-state induced transient lattice dynamics on sub-picosecond time scales in phase-change materials via X-ray diffraction. Phase-change materials (PCM) are broadly used in the current generation of rewritable DVD media as well as serving as the basis for nonvolatile phase-change random access memory (PC-RAM) widely believed to the successor to FLASH memory. The XFEL SACLA produces extremely bright and short intense (10 fs) pulses in the X-ray region and is the first domestic X-ray laser source in Japan. The ultrashort nature of the X-ray pulses in conjunction with their short wavelength (10-10 m) allow direct stroboscopic observation of transient changes in the atomic structure of solids on unprecedented time scales.http://phys.org/news/2016-02-successful-real-time-atomic-motion-sub-nanometer.html
Nanophysics Mon, 22 Feb 2016 08:10:02 ESTnews375348091A new spin on quantum computing: Scientists train electrons with microwavesIn what may provide a potential path to processing information in a quantum computer, researchers have switched an intrinsic property of electrons from an excited state to a relaxed state on demand using a device that served as a microwave "tuning fork."http://phys.org/news/2016-02-quantum-scientists-electrons-microwaves.html
Quantum Physics Mon, 15 Feb 2016 11:00:16 ESTnews374751924Electron's 1-D metallic surface state observedIn the one-dimensional (1D), various exotic phenomena are predicted that are totally different from those in the 3D world in which we live. One of the reasons of this is that particles cannot pass each other in 1D. (Fig. 1, in other words, correlation between electrons plays much more important role than those in 3D)http://phys.org/news/2016-02-electron-d-metallic-surface-state.html
General Physics Mon, 08 Feb 2016 09:52:45 ESTnews374147557Physicists propose the first scheme to teleport the memory of an organismIn "Star Trek," a transporter can teleport a person from one location to a remote location without actually making the journey along the way. Such a transporter has fascinated many people. Quantum teleportation shares several features of the transporter and is one of the most important protocols in quantum information. In a recent study, Prof. Tongcang Li at Purdue University and Dr. Zhang-qi Yin at Tsinghua University proposed the first scheme to use electromechanical oscillators and superconducting circuits to teleport the internal quantum state (memory) and center-of-mass motion state of a microorganism. They also proposed a scheme to create a Schrödinger's cat state in which a microorganism can be in two places at the same time. This is an important step toward potentially teleporting an organism in future.http://phys.org/news/2016-01-physicists-scheme-teleport-memory.html
Quantum Physics Thu, 14 Jan 2016 05:37:55 ESTnews371972265Pure quantum-mechanical mixture of electrons and photons demonstrated in bismuth selenideIn 2013, MIT physicists showed for the first time that shining powerful mid-infrared laser light on solid bismuth selenide produces Floquet-Bloch states, which are characterized by replicas of electronic energy states inside a solid with gaps opening up at crossing points of replica states. The same external light also interacts with free electron states immediately outside the solid producing a competing state, called the Volkov state, which is gapless.http://phys.org/news/2016-01-pure-quantum-mechanical-mixture-electrons-photons.html
General Physics Tue, 05 Jan 2016 06:07:02 ESTnews371196041Manipulating transistors at terahertz frequenciesAn interdisciplinary team at the Ruhr-Universität Bochum has found a way of accessing the interior of transistors. The researchers have manipulated the electron gas contained within by applying resonators to generate rhythmic oscillation in the terahertz range inside. They shared their findings in the magazine Scientific Reports.http://phys.org/news/2015-11-transistors-terahertz-frequencies.html
Nanophysics Mon, 23 Nov 2015 08:08:20 ESTnews367488492States wrestle with cost of electronics recyclingAn old television. A first-generation iPhone. The free printer that came with a new computer.http://phys.org/news/2015-11-states-electronics-recycling.html
Environment Mon, 16 Nov 2015 09:00:02 ESTnews366885809US trial convicts trio of high-tech exports to RussiaTwo men and a woman were convicted at trial in New York on Monday of illegally exporting high-tech electronics from Texas to Russian military and spy agencies.http://phys.org/news/2015-10-trial-convicts-trio-high-tech-exports.html
Security Mon, 26 Oct 2015 18:10:01 ESTnews365101055Researchers observe phase transition thought impossibleAn ultrapure material taken to pressures greater than that in the depths of the ocean and chilled to temperatures colder than outer space has revealed an unexpected phase transition that crosses two different phase categories.http://phys.org/news/2015-10-physicists-phase-transition.html
Quantum Physics Mon, 26 Oct 2015 12:00:12 ESTnews365064137Electron partitioning process in graphene observed, a world firstA group of researchers from Osaka University, The University of Tokyo, Kyoto University, and the National Institute for Materials Science precisely conducted current-fluctuation ("shot noise") measurement in the graphene p–n junction in the quantum Hall regime.http://phys.org/news/2015-10-electron-partitioning-graphene-world.html
Nanomaterials Fri, 02 Oct 2015 06:46:22 ESTnews362987175Study is the first to apply measurement methods in spin caloritronics fieldAn experiment at Tohoku University (Japan) in 2008 laid the foundations for research on 'spin caloritronics' – a field that aims to develop more effective and energy-saving data processing in information technology. Since then, many new spincaloric effects have been studied, but the key experiment in Japan could not be replicated. Researchers at Bielefeld University's Faculty of Physics have now found an explanation for this. They have published their findings in the journal Nature Communications. By applying a new measurement method available at major research facilities, they have also extended the experimental repertoire in spin caloritronics. These results can be found in the journal Physical Review Letters.http://phys.org/news/2015-09-methods-caloritronics-field.html
General Physics Wed, 23 Sep 2015 10:27:55 ESTnews362222859Realization of the building block of a Hund's metalUnderstanding the physical mechanism for high temperature superconductors is a key step toward a room temperature superconductor. One characteristic aspect of these materials is the simultaneous presence of charges which fluctuate but also behave interact with magnets. In Nature Nanotechnology, Prof. Alex Khajetoorians from the Radboud University SPM lab is first author of the article, reports a new step in understanding these physical mechanisms. The international team have experimentally realized and studied the basic building block of an electron phase refered to as Hund's metal, which is an electronic phase commonly found in high-temperature superconductors.http://phys.org/news/2015-09-block-hund-metal.html
Superconductivity Tue, 08 Sep 2015 08:17:26 ESTnews360919037Shift from electronics to spintronics opens up possibilities of faster dataElectronics is based on measuring the tiny electrical charge of electrons passing through electronic circuits. An alternative approach under development is spintronics, which instead relies not on electrons' charge, but on another of their fundamental quantum-mechanical properties: spin.http://phys.org/news/2015-09-shift-electronics-spintronics-possibilities-faster.html
General Physics Wed, 02 Sep 2015 10:00:02 ESTnews360400331